well, it's past the deadline.
here is another picture (up close) and a few clues.
It's a magnolia.
It is very rare in Maryland. I remember when I did some tree work for Dr. Brown (who wrote my dendro book in college), he said, "you are from Harford county huh? I remember a tree I found there at Rocks State Park that I found no where else in Maryland, Magnolia _ _ _ _ _ _ _."
And I remembered that name and always wanted one since.
Anyway, check out the lack of lobes at the base of the leaf as the leaf tissue meets the petiole. So, it's not fraser, pyramid or bigleaf magnolia. It is....
Go ahead Tom....
It is similar to the spelling of some Magnolia you mentioned that I had never heard of before....